AQUEOUS STYRENE-ACRYLIC DISPERSION AND PREPARATION METHOD THEREOF Russian patent published in 2015 - IPC C08F212/08 C08F220/04 C08F220/18 C08F220/28 C08F220/32 

FIELD: chemistry.

SUBSTANCE: invention relates to an aqueous styrene-acrylic dispersion used to produce paint materials, adhesives, construction mixtures, particularly as a binding component for water-proofing and thin-layer energy-saving and heat-insulating coatings. The aqueous styrene-acrylic dispersion is obtained from a mixture of monomers: styrene, butyl acrylate, acrylic acid, glycidyl methacrylate and 2-hydroxyethyl methacrylate in the presence of an emulsifier - synthanol DS-10, an initiator - ammonium persulphate, distilled water, with the following ratio of components, pts.wt: styrene 19.56-20.49, butyl acrylate 16.27-17.05, acrylic acid 0.40-0.42, synthanol DS-10 0.65-0.68, glycidyl methacrylate 3.85-9.37, 2-hydroxyethyl methacrylate 3.65-5.31, ammonium persulphate 0.14-0.15, distilled water 49.96-53.68, wherein the obtained dispersion is neutralised with a mixture of triethanolamine and ammonia water in ratio of 1:1 to pH=5-6. A method of preparing the dispersion is also disclosed.

EFFECT: dispersion provides improved physical-mechanical and operational properties of films made from the dispersion.

2 cl, 2 tbl, 5 ex